Only put VM state entry if a symbolized stacktrace is empty.

src/profile-generator.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 544 matching lines @@
 
     for (const Address *stack_pos = sample.stack,
            *stack_end = stack_pos + sample.frames_count;
          stack_pos != stack_end;
          ++stack_pos) {
       *entry++ = code_map_.FindEntry(*stack_pos);
     }
   }
 
   if (FLAG_prof_browser_mode) {
-    // Put VM state as the topmost entry.
-    *entry++ = EntryForVMState(sample.state);
+    bool no_symbolized_entries = true;
+    for (CodeEntry** e = entries.start(); e != entry; ++e) {
+      if (*e != NULL) {
+        no_symbolized_entries = false;
+        break;
+      }
+    }
+    // If no frames were symbolized, put the VM state entry in.
+    if (no_symbolized_entries) {
+      *entry++ = EntryForVMState(sample.state);
+    }
   }
 
   profiles_->AddPathToCurrentProfiles(entries);
 }
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_LOGGING_AND_PROFILING